CODEWITHSUNDEEP
javaswingruntimejcomponent
ManthanB
ManthanB

Reputation: 414

Dynamically add components without clicking button

I am adding the components dynamically at runtime on clicking the button. But now i want to add components Dynamically without clicking button. How can i do that..?? Here is my source code for adding a component on clicking the Button.

private void jButton3ActionPerformed(java.awt.event.ActionEvent evt) {                                         

        String[] items = new String[4];
        items[0]="English";
        items[1]="French";
        items[2]="Spanish";
        items[3]="Hindi";
        JTextField jtextfield = new JTextField();
        jtextfield.setPreferredSize(new Dimension(50, 20));
        JButton jbutton = new JButton();
        jbutton.setText("Remove");
        jbutton.setPreferredSize(new Dimension(89, 23));

        JLabel jlabel = new JLabel();
        jlabel.setText("Text:");
        jlabel.setPreferredSize(new Dimension(40, 20));
        JLabel jlabel2 = new JLabel();
        jlabel2.setText("Language:");
        jlabel2.setPreferredSize(new Dimension(65, 20));

        JComboBox jcombo = new JComboBox();
        jcombo.setPreferredSize(new Dimension(80,20));
        jcombo.addItem(items[0]);
        jcombo.addItem(items[1]);
        jcombo.addItem(items[2]);
        jcombo.addItem(items[3]);

        jPanel6.add(jlabel);
        jPanel6.add(jtextfield);
        jPanel6.add(jlabel2);
        jPanel6.add(jcombo);
        jPanel6.add(jbutton);

        jbutton.addActionListener(new ActionListener() {

            public void actionPerformed(ActionEvent e) {
                Component[]storeAllButtonInPanel = jPanel6.getComponents();

                if(storeAllButtonInPanel.length!=0) {
                    jPanel6.remove(storeAllButtonInPanel.length-1);
                    jPanel6.remove(storeAllButtonInPanel.length-2);
                    jPanel6.remove(storeAllButtonInPanel.length-3);
                    jPanel6.remove(storeAllButtonInPanel.length-4);
                    jPanel6.remove(storeAllButtonInPanel.length-5);

                    jPanel6.revalidate();
                    validate();
                    repaint();
                }
            }

        });



        jPanel6.validate();
        jPanel6.repaint();
    }

And if i have only 2 values of Text then it also disply two rows and if 3 values then there should be only 3 rows..!! How can i do that.?

Upvotes: 1

Views: 322

Answers (2)

trashgod
trashgod

Reputation: 205785

An instance of javax.swing.Timer can periodically invoke the actionPerformed() method of an ActionListener, as suggested in this example that adds and removes JLabels.

Upvotes: 2

mKorbel
mKorbel

Reputation: 109813

no idea what do you want, there is needed / required some control about that, as output to the GUI and by using some of Listener (as your ActionListener),

maybe (with full control) JPopupMenu, API, examples here or here

Upvotes: 2

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